CN210680710U - Distributed electric system of variable-frequency air conditioner of rail train - Google Patents
Distributed electric system of variable-frequency air conditioner of rail train Download PDFInfo
- Publication number
- CN210680710U CN210680710U CN201921180433.4U CN201921180433U CN210680710U CN 210680710 U CN210680710 U CN 210680710U CN 201921180433 U CN201921180433 U CN 201921180433U CN 210680710 U CN210680710 U CN 210680710U
- Authority
- CN
- China
- Prior art keywords
- air conditioner
- air
- air conditioning
- variable frequency
- power
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Electric Propulsion And Braking For Vehicles (AREA)
Abstract
The utility model relates to a rail train variable frequency air conditioner distributed electrical system, which comprises an air conditioning unit, an air conditioning control module and an air conditioning frequency converter; the air conditioning unit is arranged at the top of the carriage, and the air conditioning control module is arranged in the comprehensive electrical cabinet of the carriage, is connected with the air conditioning unit and is used for controlling the air conditioning unit to work; the air conditioner frequency converter is arranged in an auxiliary power box at the bottom of the carriage, is connected with the air conditioner control module and is used for providing a VVVF power supply for the air conditioner control module. The utility model discloses set up the air conditioner converter in the car auxiliary power supply case, air conditioner control module set up in carriage integrated control cabinet down for only electrical execution part in the variable frequency air conditioning unit of roof, no electrical control and converter, make the electric maintenance of variable frequency air conditioning can reference the maintenance mode of the former constant speed air conditioner of existing vehicle, and needn't upgrade by the constant speed at vehicle air conditioning for the whole brand-new maintenance methods of changing behind the frequency conversion, the installation is overhauld conveniently, practices thrift the cost.
Description
Technical Field
The utility model belongs to the technical field of variable frequency air conditioner, especially, relate to a rail train variable frequency air conditioner distributing type electrical system.
Background
At present, the air conditioning device of air-conditioned railway carriages in China is generally a roof unit type air conditioning unit, taking a 25-type carriage as an example, the air conditioning of the 25-type railway carriage mainly takes a constant speed air conditioner as a main part, the constant speed air conditioning unit is installed on the roof, the air conditioner is electrically controlled in a comprehensive electrical cabinet in a carriage, and a main power supply (AC380V) required by the air conditioner is provided by an auxiliary power supply box at the bottom of the carriage, which is shown in reference to FIG. 1. However, since the constant-speed air conditioner adopts the constant-speed compressor, the temperature is adjusted by switching on and off the compressor, and the technology is backward, so that the fluctuation of the temperature for adjusting the environment of the carriage is large, the comfort level is poor, and the energy consumption of the air conditioner is large. Therefore, it is necessary to upgrade the constant speed air conditioner device to an inverter air conditioner, the inverter air conditioner adopts an inverter compressor, the temperature regulation is realized through the change of the rotating speed of the compressor, and the inverter air conditioner is superior to the constant speed air conditioner in energy conservation, constant temperature, comfort and refrigeration and heating.
However, the electrical system of the conventional inverter air conditioner is generally integrated with the heat exchange system of the air conditioning unit, as shown in fig. 2, that is, the air conditioner controller, the inverter compressor, the ventilator, the condensing fan, the heat exchange system, and the like are all disposed in the same box. If the installation mode of the constant-speed air conditioner is adopted, the variable-frequency air conditioner is installed on the roof, and the electric system and the heat exchange system are integrally designed and are all installed on the roof, so that the variable-frequency air conditioner is very inconvenient to maintain when the electric system fails.
Because the existing variable-frequency air-conditioning electrical system and the constant-speed air-conditioning electrical system have different electrical compositions and different installation positions, the maintenance method cannot be compatible, and the use of the existing vehicle, particularly the maintenance, is greatly influenced. Therefore, it is necessary to improve the electrical structure of the existing inverter air conditioner by combining the installation mode of the constant speed air conditioner, so that the inverter air conditioner is suitable for air-conditioning passenger trains.
SUMMERY OF THE UTILITY MODEL
The utility model discloses to the not enough of current frequency conversion air conditioner electrical system existence, provide a rail train frequency conversion air conditioner distributing type electrical system, adopt the distributing type arrangement mode with air conditioning unit, air conditioner control module, air conditioner converter, the installation, overhaul the convenience.
In order to achieve the purpose, the utility model provides a track train variable frequency air conditioner distributed electrical system, which comprises an air conditioning unit, an air conditioning control module and an air conditioning frequency converter; the air conditioning unit is arranged at the top of the carriage, and the air conditioning control module is arranged in the comprehensive electrical cabinet of the carriage, is connected with the air conditioning unit and is used for controlling the air conditioning unit to work; the air conditioner frequency converter is arranged in an auxiliary power box at the bottom of the carriage, is connected with the air conditioner control module and is used for providing a VVVF power supply for the air conditioner control module.
Preferably, the air conditioner frequency converter comprises a frequency conversion controller and a power supply inverter circuit, wherein the frequency conversion controller is connected with the power supply inverter circuit and is used for controlling the power supply inverter circuit to convert the direct-current bus voltage into a VVVF power supply voltage and output the VVVF power supply voltage to the air conditioner control module; and the frequency conversion controller is connected with the air conditioner control module and used for receiving the control command of the air conditioner control module and feeding back the state information of the air conditioner frequency converter.
Preferably, the air conditioner frequency converter comprises at least one group of frequency converter controller and a power inverter circuit, and is used for outputting one or more paths of VVVF power supplies.
Preferably, the air conditioner control module comprises a central processing unit, a main electric output control part and a signal acquisition input module; the central processing unit is respectively connected with the main electric output control part and the signal acquisition input module; the input end of the main electric output control component is connected with a VVVF power supply of an air conditioner frequency converter and an AC380V power supply end provided by a train, and the output end of the main electric output control component is connected with the air conditioning unit; the signal acquisition input module is connected with a temperature sensor and a pressure protection switch of the air conditioning unit and is used for acquiring state information of the air conditioning unit; and the central processing unit is used for controlling the main electric output control part to output a VVVF power supply and an AC380V power supply so as to control the air conditioning unit to work according to the acquired state information of the air conditioning unit.
Preferably, the air conditioner control module further comprises an auxiliary output control component, a power circuit protection device, a power module and a communication module, wherein the auxiliary output control component, the power circuit protection device, the power module and the communication module are respectively connected with the central processing unit; the power circuit protection device is connected to a VVVF power supply and an AC380V power supply main circuit in series and used for overcurrent protection; the communication module is connected with a train network and is used for communicating with a train network system; the power supply module generates a control power supply voltage required by the air conditioner control module.
Preferably, the air conditioning unit comprises a plurality of variable frequency compressors, a plurality of ventilators and a plurality of condensing fans, wherein the variable frequency compressors are connected with the multi-channel VVVF power supply output control part in the main power output control part, and the ventilators and the plurality of condensing fans are connected with the multi-channel AC380V power supply output control part in the main power output control part.
Preferably, the air conditioning unit comprises a plurality of variable frequency compressors, a variable frequency ventilator and a variable frequency condensing fan, and the variable frequency compressors, the variable frequency ventilator and the variable frequency condensing fan are connected with the multi-channel VVVF power supply output control part in the main power output control part.
Compared with the prior art, the utility model discloses an advantage lies in with positive effect:
the utility model discloses combine present air-conditioning train medium-speed air conditioner and variable frequency air conditioner electrical system, a rail train variable frequency air conditioner distributing type electrical system is provided, the mounting means of former constant-speed air conditioner is used for reference, adopt three ground distributing type designs, with air conditioner control module, air conditioner converter and air conditioning unit separately design, set up air conditioning unit in the carriage top, air conditioner control module sets up in the carriage synthesis regulator cubicle, air conditioner converter sets up in the auxiliary power supply incasement of carriage bottom, be connected with air conditioner control module, the air conditioner control module in VVVF power output to the carriage of production, supply with air conditioning unit by control module control again, control air conditioning unit work. The utility model discloses set up the air conditioner converter in under the car auxiliary power supply case, air conditioner control module set up in carriage integrated control cabinet for only electrical execution part in the variable frequency air conditioning unit of roof, no electrical control and converter have avoided the maintenance of stepping on of relevant electric component. The air conditioner frequency converter is concentrated in an auxiliary power box under the vehicle, the circuits of the same type are concentrated, and the electrical distribution is more reasonable. Meanwhile, the electrical maintenance mode of the variable frequency air conditioner can reference the maintenance mode of the existing vehicle air conditioner at the original constant speed, and a brand new maintenance method is not required to be completely replaced after the vehicle air conditioner is upgraded from the constant speed to the variable frequency, so that the installation and maintenance are convenient.
Drawings
FIG. 1 is a schematic structural diagram of a conventional constant speed air conditioning electrical system;
FIG. 2 is a schematic structural diagram of an electric system of a conventional inverter air conditioner;
fig. 3 is a schematic structural diagram of the distributed electrical system of the variable frequency air conditioner of the present invention;
FIG. 4 is a schematic structural diagram of an air conditioner inverter;
fig. 5 is a schematic diagram of a system structure for outputting multiple VVVF power voltages by an air conditioner inverter;
fig. 6 is a schematic diagram of a system structure of an air conditioner inverter outputting a single VVVF supply voltage;
fig. 7 is a schematic structural diagram of an air conditioner control module.
Detailed Description
In order to make the technical solutions better understood by those skilled in the art, the technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are partial embodiments of the present application, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
The terms "comprises" and "comprising," and any variations thereof, in the description and claims of this application and the drawings described above, are intended to cover non-exclusive inclusions. For example, a process, method, or system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus. Furthermore, the terms "first," "second," and "third," etc. are used to distinguish between different objects and are not used to describe a particular order.
The application combines the design and installation of constant speed air conditioners and variable frequency air conditioners in the existing rail train, provides a distributed electric system of variable frequency air conditioners of the rail train, uses the installation mode of the original constant speed air conditioners for reference, and adopts a three-place distributed design, namely, refer to fig. 3. A distributed electric system of a variable-frequency air conditioner of a rail train comprises an air conditioning unit, an air conditioner control module and an air conditioner frequency converter. The air conditioning unit is arranged at the top of the carriage, and the air conditioning control module is arranged in the comprehensive electrical cabinet of the carriage, is connected with the air conditioning unit and is used for controlling the air conditioning unit to work; the air conditioner frequency converter is arranged in an auxiliary power box at the bottom of the carriage and connected with the air conditioner control module, the generated VVVF power is output to the air conditioner control module in the carriage, and then the control module controls the power to be supplied to the air conditioning unit to control the air conditioning unit to work.
Compared with the existing variable frequency air conditioner, the variable frequency air conditioner has the advantages that the air conditioner frequency converter is arranged in the auxiliary power box under the vehicle, the air conditioner control module is arranged in the comprehensive control cabinet of the carriage, only the electric execution part is arranged in the variable frequency air conditioner unit at the top of the vehicle, the electric control and the frequency converter are omitted, the top-climbing maintenance of related electric parts is avoided, the maintenance mode can refer to the maintenance mode of the existing original constant-speed air conditioner of the vehicle, the brand-new maintenance method is not required to be completely replaced after the vehicle air conditioner is upgraded into the frequency conversion from the constant speed, the installation and the maintenance are convenient. Meanwhile, the air conditioner frequency converter is concentrated in an auxiliary power box under the vehicle, the circuits of the same type are concentrated, and the electrical distribution is more reasonable.
Specifically, referring to fig. 4, in comparison with the air conditioner inverter, the air conditioner inverter in this embodiment includes a frequency conversion controller and a power inverter circuit, the frequency conversion controller is connected to the power inverter circuit, and the power inverter circuit is controlled to convert the dc bus voltage into the VVVF power voltage and output the VVVF power voltage to the air conditioner control module. The frequency conversion controller is connected with the air conditioner control module and used for receiving the control command of the air conditioner control module and feeding back the state information of the air conditioner frequency converter.
Referring to fig. 5 and 6, in the present embodiment, the air conditioner frequency converter may be configured as one or more sets of frequency conversion controllers and power inverter circuits, and is configured to output one or more VVVF power supplies. If the air conditioner frequency converter is set to be a plurality of groups of frequency conversion controllers and power supply inverter circuits, a plurality of paths of VVVF power supplies are output and connected to an air conditioner control module; the plurality of variable frequency controllers are connected with the air conditioner control module and used for receiving the control command of the air conditioner control module and feeding back respective state information. If the air conditioner frequency converter is provided with a group of frequency conversion controller and power supply inverter circuit, a single-path VVVF power supply is output and connected to the air conditioner control module.
Referring to fig. 7, as for the air-conditioning control module, the air-conditioning control module is a core control part of the distributed electrical system of the variable-frequency air conditioner, and includes a central processing unit, a main electrical output control component, an auxiliary electrical output control component, a signal acquisition input module, a power circuit protection device, a power module, a communication module, and the like; the central processing unit is respectively connected with the main power output control part, the auxiliary output control part, the signal acquisition input module, the power circuit protection device, the power module, the communication module and the like. The signal acquisition input module is connected with a temperature sensor and a pressure protection switch of the air conditioning unit and used for acquiring state information of the air conditioning unit, such as temperature, pressure and the like. And the central processing unit is used for controlling the main electric output control part to output the VVVF power supply and the AC380V power supply so as to control the air conditioning unit to work according to the acquired state information of the air conditioning unit. The main electric output control part comprises a switch on-off device such as a contactor, the input end of the main electric output control part is connected with a VVVF power supply of an air conditioner frequency converter and an AC380V power supply end provided by a train, and the output end of the main electric output control part is connected with a frequency conversion compressor, a ventilator, a condensing fan and the like of an air conditioning unit. The auxiliary output control component is connected with a fresh air device and an air return device of the air conditioning unit. The power circuit protection device comprises a motor protector, a circuit breaker and the like, and is connected to the VVVF power supply and the AC380V power supply main circuit in series for overcurrent protection. The communication module is connected with the train network and is used for communicating with the train network system. The power supply module generates various control power supply voltages required by the air conditioner control module. The central processor controls each part according to a pre-written variable frequency air conditioner control program, and realizes the collection of information such as air conditioner temperature and pressure protection, the control of variable frequency air conditioner working mode, the calculation of compressor frequency, the output control of air conditioning units, the communication with trains and the like.
Compared with the existing variable frequency air conditioner, the variable frequency air conditioner has the advantages that the air conditioner control module and the air conditioner unit of the variable frequency air conditioner are designed separately, the signal acquisition input module of the air conditioner control module acquires state information of the air conditioner unit, such as temperature and pressure protection switches, the central processing unit outputs the VVVF power supply, the AC380V power supply and the like by controlling the on-off of the main power output control part according to the acquired information of the air conditioner unit, and further controls the variable frequency compressor, the ventilator, the condensing fan and the like of the air conditioner unit to work.
For the air conditioning unit, air conditioning unit includes but not limited to inverter compressor, ventilation blower and condensation fan in this embodiment, still includes air conditioning function parts such as heat transfer system, new trend device, return air device. The variable frequency compressor, the ventilator and the condensing fan are respectively connected with the main electric output control part; the fresh air device and the air return device are connected with the auxiliary output control component.
As further shown in fig. 5, 6 and 7, the air conditioning unit of the present embodiment may be provided with a plurality of inverter compressors, ventilators and condensing fans. When the air conditioner frequency converter is provided with a plurality of groups of frequency conversion controllers and power supply inverter circuits, a plurality of paths of VVVF power supplies are output to a main power output control part of the air conditioner control module, a plurality of frequency conversion compressors are connected with the multi-path VVVF power supply output control part in the main power output control part, and a plurality of ventilators are connected with a plurality of condensing fans and the multi-path AC380V power supply output control part in the main power output control part. At the moment, the air conditioner control module calculates the operating frequencies of the variable frequency compressors and controls the multi-channel VVVF power supply to be respectively supplied to the variable frequency compressors in the air conditioning unit. When the air conditioner frequency converter is set as a group of frequency conversion controller and power supply inverter circuit, a single-path VVVF power supply is output, the single-path VVVF power supply is connected to a main power output control component of the air conditioner control module and is branched, a central processing unit controls the connection or disconnection of each path of on-off control component, and then a plurality of frequency conversion compressors of the air conditioner unit are driven and controlled to work.
Meanwhile, the air conditioning unit can also be provided with a plurality of variable-frequency compressors, variable-frequency ventilators and variable-frequency condensing fans. When the air conditioner frequency converter is provided with a plurality of groups of frequency conversion controllers and power supply inverter circuits, a plurality of frequency conversion compressors, a plurality of frequency conversion ventilators and a frequency conversion condensing fan are connected with a multi-channel VVVF power supply output control part in the main power output control part. At the moment, the air conditioner control module calculates the operating frequencies of a plurality of variable frequency compressors, variable frequency ventilators, variable frequency condensing fans and the like, and controls a plurality of VVVF power supplies to a plurality of variable frequency execution components such as the variable frequency compressors, the variable frequency ventilators, the variable frequency condensing fans and the like in the air conditioning unit respectively. When the air conditioner frequency converter is set to be a set of frequency conversion controller and power supply inverter circuit, a single-path VVVF power supply is output, the single-path VVVF power supply is connected to an output control part of the air conditioner control module and is branched, the central processing unit controls the connection or disconnection of each path of on-off control part, and then a plurality of frequency conversion compressors, frequency conversion ventilators and frequency conversion condensing fans of the air conditioner unit are driven and controlled to work.
In order to make the utility model discloses a rail train variable frequency air conditioner distributing type electrical system is clearer, will below the utility model discloses a working process carries out the detailed description as follows:
after the vehicle is powered on, the air conditioning control module receives external operation commands such as train network commands or man-machine operation input and the like, and detects state information such as temperature and pressure protection switches of the air conditioning unit in real time. And when the command requires the air conditioner to run, the air conditioner control module judges whether the state of the air conditioner can start running or not and calculates the running frequency of the variable frequency compressor. If the running is started, switching on and off devices of a ventilator, a condensing fan, a compressor and the like are closed according to a certain time sequence; the air conditioner control module outputs a starting control signal to the air conditioner frequency converter to control the frequency converter to start and operate. If the air conditioner stops running, the air conditioner control module outputs a stop control signal to the air conditioner frequency converter to control the frequency converter to stop running and disconnect on-off devices of the ventilator, the condensing fan and the compressor. If the air conditioner state information has a fault signal, the air conditioner control module controls the air conditioning unit to stop running or controls the frequency reduction running of the air conditioner frequency converter according to a set protection method in the control program.
Claims (7)
1. A rail train variable frequency air conditioner distributed electrical system is characterized by comprising an air conditioning unit, an air conditioner control module and an air conditioner frequency converter; the air conditioning unit is arranged at the top of the carriage, and the air conditioning control module is arranged in the comprehensive electrical cabinet of the carriage, is connected with the air conditioning unit and is used for controlling the air conditioning unit to work; the air conditioner frequency converter is arranged in an auxiliary power box at the bottom of the carriage, is connected with the air conditioner control module and is used for providing a VVVF power supply for the air conditioner control module.
2. The rail train variable frequency air-conditioning distributed electrical system according to claim 1, wherein the air-conditioning inverter comprises an inverter controller and a power inverter circuit, and the inverter controller is connected with the power inverter circuit and is used for controlling the power inverter circuit to convert a direct current bus voltage into a VVVF power voltage and output the VVVF power voltage to the air-conditioning control module; and the frequency conversion controller is connected with the air conditioner control module and used for receiving the control command of the air conditioner control module and feeding back the state information of the air conditioner frequency converter.
3. The variable frequency air-conditioning distributed electrical system for the rail train as claimed in claim 2, wherein the air-conditioning frequency converter comprises at least one set of a variable frequency controller and a power inverter circuit for outputting one or more VVVF power supplies.
4. The variable frequency air-conditioning distributed electrical system for the rail train according to any one of claims 1 to 3, wherein the air-conditioning control module comprises a central processing unit, a main electrical output control part and a signal acquisition input module; the central processing unit is respectively connected with the main electric output control part and the signal acquisition input module; the input end of the main electric output control component is connected with a VVVF power supply of an air conditioner frequency converter and an AC380V power supply end provided by a train, and the output end of the main electric output control component is connected with the air conditioning unit; the signal acquisition input module is connected with a temperature sensor and a pressure protection switch of the air conditioning unit and is used for acquiring state information of the air conditioning unit; and the central processing unit is used for controlling the main electric output control part to output a VVVF power supply and an AC380V power supply so as to control the air conditioning unit to work according to the acquired state information of the air conditioning unit.
5. The variable frequency air-conditioning distributed electrical system for the rail train according to claim 4, wherein the air-conditioning control module further comprises an auxiliary output control component, a power circuit protection device, a power module and a communication module, and the auxiliary output control component, the power circuit protection device, the power module and the communication module are respectively connected with the central processing unit; the auxiliary output control part is connected with a fresh air device and an air return device of the air conditioning unit; the power circuit protection device is connected to a VVVF power supply and an AC380V power supply main circuit in series and used for overcurrent protection; the communication module is connected with a train network and is used for communicating with a train network system; the power supply module generates a control power supply voltage required by the air conditioner control module.
6. The rail train variable frequency air conditioning distributed electrical system of claim 5, wherein the air conditioning packs comprise a plurality of variable frequency compressors connected to the multiplexed VVVF power output control component of the main power output control component, a plurality of ventilators connected to the plurality of condensing fans connected to the multiplexed AC380V power output control component of the main power output control component.
7. The rail train variable frequency air conditioning distributed electrical system of claim 5, wherein the air conditioning units comprise a plurality of variable frequency compressors, variable frequency ventilators, and variable frequency condensing fans, and the plurality of variable frequency compressors, variable frequency ventilators, and variable frequency condensing fans are connected with the multi-way VVVF power supply output control part in the main power output control part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921180433.4U CN210680710U (en) | 2019-07-25 | 2019-07-25 | Distributed electric system of variable-frequency air conditioner of rail train |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921180433.4U CN210680710U (en) | 2019-07-25 | 2019-07-25 | Distributed electric system of variable-frequency air conditioner of rail train |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210680710U true CN210680710U (en) | 2020-06-05 |
Family
ID=70896109
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921180433.4U Active CN210680710U (en) | 2019-07-25 | 2019-07-25 | Distributed electric system of variable-frequency air conditioner of rail train |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210680710U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009512A (en) * | 2020-09-01 | 2020-12-01 | 中车青岛四方车辆研究所有限公司 | Environment regulation control device and method for passenger room of urban rail vehicle |
| CN113525437A (en) * | 2021-06-30 | 2021-10-22 | 广州鼎汉轨道交通车辆装备有限公司 | R744 refrigerant heat pump air conditioning unit, system and control method thereof |
-
2019
- 2019-07-25 CN CN201921180433.4U patent/CN210680710U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112009512A (en) * | 2020-09-01 | 2020-12-01 | 中车青岛四方车辆研究所有限公司 | Environment regulation control device and method for passenger room of urban rail vehicle |
| CN113525437A (en) * | 2021-06-30 | 2021-10-22 | 广州鼎汉轨道交通车辆装备有限公司 | R744 refrigerant heat pump air conditioning unit, system and control method thereof |
| CN113525437B (en) * | 2021-06-30 | 2023-10-03 | 广州鼎汉轨道交通车辆装备有限公司 | R744 refrigerant heat pump air conditioning unit, system and control method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8013469B2 (en) | System and process for power supply to a railway vehicle, converter, control unit, and air-conditioning unit for the system | |
| CN200993455Y (en) | Vehicular DC variable frequency air conditioner control circuit | |
| CN210680710U (en) | Distributed electric system of variable-frequency air conditioner of rail train | |
| CN201313557Y (en) | High-speed railway carriage air conditioner | |
| CN104142008A (en) | Photovoltaic air conditioner and photovoltaic air conditioning system | |
| CN105946513A (en) | Variable-frequency energy-saving electric control assembly used for full alternating-current air conditioning system of new-energy electric bus | |
| CN109882438A (en) | A kind of double frequency conversion speed-adjusting systems of electric fan | |
| CN203533804U (en) | Control system of electric motor coach air conditioner for providing comfort for passengers in warm or cool environment | |
| CN106143051A (en) | Energy-saving and frequency-variable Electronic Control Assembly for New energy electric passenger vehicle AC/DC air-conditioner system | |
| CN101237215B (en) | Car air-conditioner frequency conversion control system and its method | |
| CN205191841U (en) | Many online air conditioning system's drive arrangement and how online air conditioning system | |
| CN102420388A (en) | Train power cube for alternating current drive locomotive | |
| CN204696681U (en) | A kind of high voltage direct current power supply rail vehicle air conditioning unit | |
| CN203485926U (en) | DC powered air-conditioning set of passenger train | |
| CN204438379U (en) | A kind of frequency conversion of many power based on CAN coach air conditioner | |
| CN202734145U (en) | Air conditioning unit energy saving control cabinet | |
| CN111605573B (en) | Electric cabinet, control method and device of air conditioner, air conditioning unit and train | |
| CN202267169U (en) | Dedicated air conditioner electric control system for passenger car | |
| CN217969515U (en) | Variable frequency air conditioner control system | |
| CN204821033U (en) | Double dynamical vehicle air conditioner that can external AC220V power | |
| CN201032709Y (en) | Vehicle air conditioner frequency conversion controller | |
| CN204717999U (en) | A kind of vehicle electric air-conditioner control system based on CAN | |
| CN109263671B (en) | Dehumidification control method of vehicle variable frequency air conditioner | |
| CN207345824U (en) | A kind of airconditioning control cabinet, air-conditioner set and rail vehicle | |
| CN220924112U (en) | Intelligent air conditioner controller and control system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |